pixeldudesmaker - Simple, web-based pixel art character generator.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Universal LPC Spritesheet Character Generator - Powerful, animated character generator for creating 2D spritesheets
Autodesk 3DS Max - 3ds Max is software for 3D modeling, animation, rendering, and visualization. Create stunning game enrivonments, design visualizations, and virtual reality experiences.
Game Character Hub - helper program for game design (RPG Maker XP/VX and more)
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.